package edu.sctu.practice.class02.Wangpeng.Assign08;

/**
 * Created by wp on 2015/12/3.
 */
public class StringExample {
    public static void main(String[] args) {
        String s1=new String("you are a student");
        String s2=new String("how are you");

        if (s1.equals(s2)){
            System.out.println("s1与s2相等");
        }else{
            System.out.println("s1与s2不相等");
        }

        String s3=new String("22030219551022024");
        if(s3.startsWith("220302")){
            System.out.println("吉林省的省份证");
        }
        String s4=new String("你");
        String s5=new String("我");
        if(s4.compareTo(s5)>0){
            System.out.println("按字典序S4>S5");
        }else{
            System.out.println("按字典序S5>S4");
        }
        int position=0;
        String path="c:\\java\\jsp\\A.java";
        position=path.lastIndexOf("\\");
        System.out.println("c:\\java\\jsp\\A.java中最后出现\\的位置："+position);

        String fileName=path.substring(path.indexOf("A"));
        System.out.println("c:\\java\\jsp\\A.java中含有的文件名："+fileName);

        String s6=new String("100"),
                s7=new String("123.678");
        int n1=Integer.parseInt(s6);
        double n2=Double.parseDouble(s7);

        double m=n1+n2;
        System.out.println(m);



        String s8=String.valueOf(m);
        position=s8.indexOf(".");
        String temp=s8.substring(position+1);
        System.out.println("数字"+m+"有"+temp.length()+"位小数");
        String s9=new String("ABCDEF");
        char a[]=s8.toCharArray();

        for(int i=a.length-1;i>=0;i--){
            System.out.println(""+a[i]);
        }

        String s=new String(a);
        System.out.println("输出"+s);

        System.out.println("jsp在"+path.substring(path.indexOf("jsp")));

        String str1=new String("ABCABC"),
                str2=null,
                str3=null,
                str4=null;
        str2=str1.replaceAll("A","First");
        str3=str2.replaceAll("B","Second");
        str4=str3.replaceAll("C","Third");
        System.out.println(str1);
        System.out.println(str2);
        System.out.println(str3);
        System.out.println(str4);



    }

}
